Wow! That was a truly humbling and sublime post. I mean it. I thought I was the only one baffled by the +5.5" knife craze.So now I see there are more of us out there. I should underscore that my mentioning that O do support the usefulness of +12" Machete's for specific tasks that SAKs can't handle.
What a laugher. The majority of the world gets along just fine with small folding pocket knives, Swiss Army knives etc.
The Rambo knife phenomenom began, of course, with Rambo. The power of television is amazing. Now everyone on this board thinks that you must have a Rambo knife at least the size of a their penis. Adn you use it to make a spear and jump at pigs. OR batonning wood. At term that I've never even heard of prior to this board. Everyone thinks they need to know how to suture themselves also to be like Rambo. Whatever.
I spent a few years in army special ops. They don't issue Rambo knives. Some guys bought them, mostly the newbies or the REMF radio guys. When a warrior carries a knife, it's usually something like a double edged Randal. And it's used (theoretically) as a backup or for silent kills. I say theoretically, because I've never seen or heard of anyone actually needing it for that role. If you are to that point, things have SERIOUSLY gone wrong.
Yeah, Rambo knives look cool. They also weigh about as much as a handgun and have few uses that aren't better served by something else.
I'm lucky in that I still get paid to spend almost every day in the field under rough conditions. My first knife in my kit or on my duty belt is a leatherman, though a ;locking SAK would work too. (I use the pliers and tools more than the blades, so I like leatherman over SAK for my purpose.) I could easily get by with just this. I also carry a small sharp knife, usually a Spiderco. Precise cuts are this knife's forte. In my pack, I often carry a small hatchet. It weighs about as much as a Rambo knife and chops much better.
If you are hunting and skinning a lot, I can see the need for a fixed blade so that the cleaning is easier. Most of the Rambo knives I've seen recommended here wouldn't be able to fill this role. As far as I can tell, the role of the Rambo knife is batonning and spear making. These tasks are very low on my priority list.
When I see some 8" knife flapping around on some guys harness or leg, I think wannabe, psycho, or clown. Many other professionals feel the same way.